56100405 has 16 divisors (see below), whose sum is σ = 89861184. Its totient is φ = 29886720.

The previous prime is 56100403. The next prime is 56100439. The reversal of 56100405 is 50400165.

It is a happy number.

It is not a de Polignac number, because 56100405 - 2¹ = 56100403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56100403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17917 + ... + 20813.

It is an arithmetic number, because the mean of its divisors is an integer number (5616324).

Almost surely, 2^56100405 is an apocalyptic number.

It is an amenable number.

56100405 is a deficient number, since it is larger than the sum of its proper divisors (33760779).

56100405 is a wasteful number, since it uses less digits than its factorization.

56100405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 56100405 is about 7490.0203604530. The cubic root of 56100405 is about 382.8147522455.

The spelling of 56100405 in words is "fifty-six million, one hundred thousand, four hundred five".